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| Cambrian - Deadwood formation (1) |
| Carboniferous - Minnekahta limestone; Opeche formation; Minnelusa sandstone; Pahasapa limestone (1) |
| Cretaceous - Pierre shale; Niobrara formation; Carlile formation; Greenhorn limestone; Graneros shale; Dakota sandstone; Fuson formation; Lakota formation; Morrison formation (1) |
| Geology -- South Dakota -- Maps (1) |
| Geology -- United States --Maps (1) |
| Geology -- Wyoming -- Maps (1) |
| Jurassic - Sundance formation (1) |
| Neogene - unnamed strata (1) |
| Ordovician - Whitewood limestone (1) |
| Paleogene - unnamed strata (1) |